The Eagles have done some reshuffling on their offensive line at three of the five spots. Central to that change are brothers Shawn and Stacy Andrews, who will line up at right tackle and right guard, respectively. But both have obstacles to overcome before the offensive line can reach its potential.

Both players are playing foreign positions. Shawn is playing tackle for the first time in the NFL, having last played there at Arkansas. And Stacy, a right tackle predominantly with the Bengals, is playing guard for the first time.

Another condition to watch is their health.

Shawn is coming off back surgery that ended his 2008 season prematurely, but the Eagles were optimistic he had an outside chance of playing in the Super Bowl, having kept a roster spot for him the entire season. He also has admitted to battling depression, and he was missing from last year’s training camp while many speculated where he was and why he was absent.

Head coach Andy Reid said he likes what he has seen from him so far.

“He looked good,” Reid said. “It looks like he’s enjoying it, looks like he has a pretty good understanding of it. That’s what he was in college, and that’s really why we brought him here — to play one of the tackle positions. I think he likes it out there, feels comfortable out there.”

Reid also felt confident that Stacy, who is coming off surgery in January to repair a torn ACL, is on track to play when training camp opens.

“We’re going to keep an eye on him, but I think he’ll be ready to go, yeah,” Reid said. “We’ll ease him into it and see how he does.”

Success for both players is crucial. The Eagles struggled badly to run the ball at times last season, especially in short-yardage and goal-line situations. And with RB Brian Westbrook coming into camp with serious questions about the health of his ankle, it’s imperative that the two linemen help to form a better run-blocking group.

With Tra Thomas and Jon Runyan no longer starting at tackle — Runyan still has a locker at the team’s facility and possibly could return — the line’s cohesion will be very important in camp. There also could be a fourth new starter in a new position if C Jamaal Jackson is pushed by Nick Cole, as Cole might get the chance to do at Lehigh this summer.